WebMD
Font Size
A
A
A

Sudden Infant Death Syndrome

Sudden infant death syndrome (SIDS) is the death of a baby who is younger than 1 year old without a known cause. Typically, a parent or other caregiver puts the baby—who seems healthy—down to sleep and returns later to find the baby has died.

No one is at fault when a baby dies of SIDS: it can be neither predicted nor completely prevented. A baby's death is not considered a case of SIDS when a specific cause is discovered, such as carbon monoxide poisoning. By definition, SIDS is considered the cause of a baby's death only when the death remains unexplained, even after a thorough investigation.

SIDS is also known as sudden infant death, unexplained (SIDU).

Placing babies on their backs when putting them down to sleep reduces the risk of SIDS.

By Healthwise Staff
Primary Medical Reviewer John Pope, MD - Pediatrics
Specialist Medical Reviewer Chuck Norlin, MD - Pediatrics
Last Revised May 16, 2012

WebMD Medical Reference from Healthwise

Last Updated: May 16, 2012
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.